HP StorageWorks HSG80 ACS Solution Software V8.8 for Tru64 UNIX Installation and Configuration Guide (AA-RV1VA-TE, March 2005)

Planning Storage Configurations
93HSG80 ACS Solution Software V8.8 for Tru64 UNIX Installation and Configuration Guide
Geometry
The geometry parameters of a storageset can be specified. The geometry switches
are:
■ CAPACITY—the number of logical blocks. The range is from 1 to the
maximum container size.
■ CYLINDERS—the number of cylinders used. The range is from 1 to
16777215.
■ HEADS—the number of disk heads used. The range is from 1 to 255.
■ SECTORS_PER_TRACK—the number of sectors per track used. The range is
from 1 to 255.
Specifying Unit Switches
Several switches control the characteristics of units. The unit switches are
described under the
SET unit-number command in the HP StorageWorks HSG60 and
HSG80 Array Controller and Array Controller Software Command Line Interface
(CLI) Reference Guide.
One unit switch, ENABLE/DISABLE_ACCESS_PATH, determines which host
connections can access the unit, and it is described in the larger topic of matching
units to specific hosts. This topic is described in Chapter 1, “Determining
Connections” on page 39.
Creating Storage Maps
Configuring a subsystem will be easier if you know how the storagesets,
partitions, and JBODs correspond to the disk drives in your subsystem. You can
more easily see this relationship by creating a hardcopy representation, also
known as a storage map.
To make a storage map, fill out the templates provided in Appendix A as you add
storagesets, partitions, and JBOD disks to the configuration and assign them unit
numbers. Label each disk drive in the map with the higher levels it is associated
with, up to the unit level.